*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
/*导航部分*/
nav{
    border-bottom: 2px #e7e7e7 solid;
}
.navbar{
    padding: 0;
}
nav a{
    font-weight: 600;
}
nav .a1,nav .a2:hover{
    color: #3980cf;
    text-decoration: none;
}
nav .a2{
    color:black;
    padding-left: 15px;
}
nav .ml-auto{
    margin-right:10px;
}
nav button{
    position: relative;
    height: 50px;
}
nav button i{
    background: url("../img/upgrade.png") no-repeat;
    width: 12px;
    height: 12px;
    position: absolute;
    top:19px;
    left:12px;
}
nav button span{
    padding-left: 15px;
}
/*主体部分*/

/*主体第一部分*/
.main-top{
    background-color: #5982b8;
    color: #99c3f3;
    text-align: center;
    padding: 43px 0 39px;
    margin-bottom: 60px;
}
.main-top .mt{
    border-right: 1px #99c3f3 dashed;
}
/*主体第二部分*/
.konw-top{
    padding-bottom: 70px;
}
.main-titile h2{
    color: #666;
    font-size: 22px;
}
.main-know-cont p:nth-of-type(1){
    font-size: 22px;
    color: #999;
}
.main-know-cont p{
    font-size: 13px;
    color: #777;
}
.first-list{
    padding-bottom: 44px;
}
.know-list{
    display: flex;
}
.know-list h3{
    font-size: 20px;
    color: #666;
}
.know-list p{
    font-size: 14px;
    color: #777;
    margin-bottom: 0;
}
.know-list .lef img{
    padding: 20px 20px 20px 0;
}
.last-list{
    padding-bottom: 114px;
}
.ultra-know{
    text-align: center;
    padding-bottom: 80px;
}
.ultra h4{
    font-size: 22px;
    color: #406b9e;
}
.ultra p{
    font-size: 18px;
    color: #777;
}
.know-a{
    text-align: center;
    border-top: 1px #cbcbcb solid;
}
.know-a a{
    width: 136px;
    font-size: 13px;
    color: #777;
    display:inline-block;
    padding: 16px 0;
}
.know-a .active,.know-a a:hover{
    border-top: 1px #416ca1 solid;
    text-decoration: none;
}
/*主体第三部分*/
.recent{
    padding-bottom: 68px;
}
.recent .col-md-6:nth-of-type(2){
    text-align: right;
}
.recent .col-md-4 img{
    width: 100%;
}
/*主体第四部分*/
.new-top{
    padding-bottom:86px;
}
.news-lef{
    margin-left: 0;
    display: flex;
}
.news-lef img{
    width: 100%;
    padding-bottom: 16px;
}
.news-lef h4{
    font-size: 20px;
    color: #888;
}
.news-lef p{
    color: #777;
    font-size: 13px;
}
.news-lef p:nth-of-type(2) time{
    float: right;

}
.news-con img,.news-rig img{
    width: 100%;
}
.news-con h5,.news-rig h5{
    font-size: 13px;
}
.news-con p,.news-rig p{
    font-size: 12px;
}
.news-rig .btn{
    width: 100%;
    padding: 30px 0;
    font-size: 17px;
    color: #4185b9;
    border: 1px #999 solid;
    border-radius: 0;
}
.news-rig button{
    position: relative;
}
.news-rig button i{
    background: url("../img/lanjiantou.png") no-repeat;
    width: 17px;
    height: 7px;
    position: absolute;
    top: 50%;
    left:68%;
}
.btn-outline-secondary:hover{
    background-color: #999;
    color: #fff;
}
.new-bot{
    background-color: #406da4;
    padding:96px 0;
    color: #fff;
    margin-bottom: 60px;
}
.new-bot .row{
    text-align: center;
}
.new-bot h5{
    font-size: 28px;
}
.new-bot p{
    font-size: 14px;
}
.new-list-img{
    padding-top: 3%;
}
.new-bot .new-list-img{
    text-align: right;
}
.new-bot .new-list-cont{
    padding-left: 0;
}
/*主体第五部分*/
.get{
    background-color: #ebebeb;
    padding: 25px 0;
}
.get h2{
    font-size: 30px;
    color: #666;
}
.get .col-md-6:nth-of-type(2){
    text-align: right;
    color: #777;
}
/*底部部分*/
footer{
    color: #ececec;
}
footer p{
    font-size: 13px;
}
.fot-top{
    background-color: #49494b;
    padding: 30px 0;
}
.fot-top h4{
    font-size: 16px;
    padding-bottom:18px;
}
.fot-top img{
    padding-bottom: 16px;
}
.fot-list p{
    margin-bottom:6px;
}
.form-control{
    background-color: #404040;
    border:none;
    height: 46px;
}
.fot-top .btn{
    border: none;
    background-color: #406da4;
    color: #fff;
}
.fot-bot{
    background-color: #323232;
    text-align: center;
    padding: 20px 0;
}
@media (max-width: 600px) {
    .navbar .container {
        padding: 15px;
    }
    nav ul li a:nth-of-type(1) {
        padding-left: 15px;
    }
    .main-top .mt {
        margin-bottom: 30px;
    }
    .main-top .mt:nth-of-type(1), .main-top .mt:nth-of-type(2), .main-top .mt:nth-of-type(3) {
        border-right: none;
    }
    .konw-top .col-md-6:nth-of-type(1) {
        padding-bottom: 30px;
    }
    .know-list {
        padding-bottom: 30px;
    }
    .ultra img {
        width: 100%;
    }
    .recent .col-md-6:nth-of-type(2) {
        text-align: right;
        padding-bottom: 30px;
    }
    .recent .col-md-4 {
        padding-bottom: 30px;
    }
    .news-lef {
        flex-wrap: wrap;
    }
    .news-lef img {
        width: 100%;
    }
    .news-lef .col-12 {
        padding-bottom: 30px;
    }
    .get h2 {
        padding-bottom: 30px;
    }
    .new-bot .col-md-3:nth-of-type(1),.new-bot .col-md-3:nth-of-type(2){
        padding-bottom: 30px;
    }
    .new-bot .new-list-img,.new-bot .new-list-cont{
        text-align: center;
    }
    .new-bot .new-list-cont{
        padding-left: 15px;
    }

}